Louis Bernard Bonnier (14 June 1856 – 16 September 1946) was a French architect known for his work as an urban planner for the city of Paris.

[4] With his work on the town hall at Issy-les-Moulineaux he showed his ability to discard period styles of architecture and to make use of new materials.

Bonnier designed the grillwork for the entrance to the Japanese section of the shop on Rue Chauchat, and oversaw placement of the glass cupola over the corner turret.

He oversaw the decorations and architectural changes to the shop, working with artisans such as Frank Brangwyn, an English Arts and Crafts designer.

[5] He designed a globe based on the concept of the anarchist geographer Élisée Reclus for the Paris Exposition Universelle (1900).

The pavilion gained widespread press attention and consolidated Bonnier's reputation as an architect capable of innovative solutions to unusual challenges.

[6] He was also Inspector General of Architectural Technical Services and Aesthetics of the Seine, and Chief Architect for Civil Buildings and National Palaces.

[4] He founded the Ecole supérieure d’art public in 1917, which became the École des hautes études urbaines (EHEU) in 1919.

From 1920 he was consulting architect to the PLM Railway Company, and supervised or directed construction of new stations and hotel accommodations.

[4] Throughout his career Bonnier was true to the principles of imaginative eclecticism that are one of the foundations of Art Nouveau, rejecting the stricter schools of French classical architecture in favour of more picturesque ornamentation, especially when it emphasizes and explains the structure of the building.